How many volts does a bike battery need to start?
A fully charged battery should read approximately 12.6VDC. If it reads at or below 12VDC, recharge the battery. Allow battery to rest and test again. A battery that has been fully charged, rested, and tests between 12 and 12.6VDC might start the motorcycle, but it’s not holding a full charge.
What causes a motorcycle battery voltage to drop too far?
Significant engine trouble can also cause the voltage to drop too far if it is making it difficult for the starter to turn the engine over. A good way to tell if this is happening is to check the battery cables for excessive heat. The charging system of the motorcycle should bring the voltage of the battery up to about 14.2 to 14.8 volts.
How do you measure the voltage of a bike?
Turn the multimeter on to the 20V DC section of the scale. (If you have an autoranging meter, just go to “V,” because you won’t have a scale.) With the bike completely turned off, touch the black lead to the negative post of the battery, and the red lead to the positive post. Record the voltage.
How to check a voltage regulator on a motorcycle?
Set your multimeter to 20 volts DC (Direct Current) and connect the positive (+) and negative (-) leads to the corresponding battery terminals. Your battery should be charged, giving you a reading at or just above 12 volts. Step 2 Start your motorcycle and rev the motor to 5000rpm, maintaining the engine speed during the testing.
How can I tell if my motorcycle battery is over charged?
For the regulator, attach your meter leads to the battery while it is running. It should not read higher than 14.5 volts and no lower than 13.5 volts. If it is higher, the battery will be over charged and if it is lower, the battery will continue to drain as the bike runs. If these tests do not check out, you will need a new regulator/rectifier.
Significant engine trouble can also cause the voltage to drop too far if it is making it difficult for the starter to turn the engine over. A good way to tell if this is happening is to check the battery cables for excessive heat. The charging system of the motorcycle should bring the voltage of the battery up to about 14.2 to 14.8 volts.
Turn the multimeter on to the 20V DC section of the scale. (If you have an autoranging meter, just go to “V,” because you won’t have a scale.) With the bike completely turned off, touch the black lead to the negative post of the battery, and the red lead to the positive post. Record the voltage.
How can I tell if my bike battery is fully charged?
IGNITION ON, LIGHTS ON, BIKE NOT RUNNING With the Battery fully charged and functional it’s time to test for Battery voltage drop. With the Multimeter on the same settings as above. With the ignition on and the bike not running switch on the lights and you should see the voltage drop slowly as the lights use up the power in the Battery.
What causes a Harley Davidson battery to draw power?
The radio draws some power for the clock…. there is also some power for the alarm system. I {Heart} Hookers. You need to charge battery 100%, then have a load test done on it. After that, hook charged battery to bike, attach a volt meter, and pull one fuse at a time, looking for the significant voltage drop to stop.